摘要
以石油焦脱硫灰渣为主要原料,经配方设计,烧制出硫铝酸盐水泥熟料,采用DSC-TG和XRD等分析方法分别确定了熟料的烧成过程、温度及矿物组成,研究了掺加一定量无水石膏配制的硫铝酸盐水泥的物理、力学性能。结果表明,该水泥熟料的适宜烧成温度为1 300～1 320℃,熟料主要矿物为C4A3S珔和C2S。根据实际需要,水泥中无水石膏的掺量可在5%～10%范围内调节,均能获得优异的物理性能。该水泥具有较高的早期强度,后期强度增长稳定。因此,利用石油焦脱硫灰渣为主要原料制备硫铝酸盐水泥是完全可行的。
Sulfoaluminate cement was prepared by using petroleum coke fluidized bed combustion（ FCB）fly ash as the major raw material by designing the mineral phase composition. The calcination temperature,formation mechanism,and mineralogical phase composition of cement clinker were investigated by differential scanning calorimetry-thermogravimetry and X-ray diffraction. The effect of gypsum on the mechanical properties of the prepared cement was analyzed. The results showed that the clinker could be adequately calcined at 1 300 to1 320 ℃. The essential mineral phases of the cement clinker were C4A3S珔and C2 S. Sulfoaluminate cement could be prepared by adding an excess of 5% to 10% gypsum to the clinker. The compressive strength of the sulfoaluminate cement was high in the early stage and increased smoothly in the later stage. Therefore,it was feasible to prepare sulfoaluminate cement by using petroleum coke FCB fly ash as a replacement for some raw materials.
出处
《环境工程学报》
CAS
CSCD
北大核心
2016年第8期4462-4466,共5页
Chinese Journal of Environmental Engineering
基金
国家科技支撑计划子课题(2011BAJ04B05-05)
国家自然科学基金资助项目(51378269)
山东省高校优秀科研创新团队
关键词
石油焦脱硫灰渣
硫铝酸盐水泥
矿物组成
烧成温度
petroleum coke
FCB fly ash
sulphoaluminate cement
mineral composition
calcination temperature
